I am a retired maintenance pro with years in the trade , The real test of any cutting tool is how it works on Stainless Steel , Stainless can work harden and become vary tough to drill as well as Tap and Dies...
Most upper brand name Mig welders are vary well built and I would have no problem with a used unit .But new or used some of the low buck units have so many problems they are hard to use. To almost impossible...
I am a retired industrial mechanic ,and aircraft mechanic and have used almost every brand name air tool that you could think of and more over repaired air tools that belonged to assembly line workers . And in...